Dräger Narkomed 2B Operator's Instruction Manual page 71

Filling Vaporizer
With Key Indexed
Safety System
The key indexed safety system employs a matching assembly to prevent
inadvertent use of the wrong agent in a Vapor 19.1 device. To fill a
vaporizer with key indexed safety system, you must have the
appropriate keyed bottle adapter for the anesthetic agent.
1. With the vaporizer in an upright position, turn the handwheel to "0"
(zero-point interlock) and make sure the button engages in the locked
position.
2. Remove the cap and seal from the anesthetic agent bottle. Check the
sealing edge of bottle for chipping or other damage. DO NOT use if
damaged.
3. Attach the keyed bottle adapter to the keyed collar on the bottle.
Screw the parts together tightly to form an airtight seal.
4. Turn the filler port lock screw counterclockwise and remove the filler
port plug from the filler port.
5. Insert the keyed adapter into the filler port of the vaporizer so that
the two holes in the adapter face the Teflon seal surface of the filler
port. Bend the filler tube so that the liquid level in the bottle is
below the filler port. Adjust the plastic tubing to avoid kinks.
6. Turn the filler port lock screw clockwise to hold the adapter against
the Teflon seal.
7. Open the filler valve by turning the knob counterclockwise two or
three turns.
CAUTION: Be sure to fill the vaporizer in an upright position; filling
the vaporizer in a tilted position may cause overfilling.
Overfilling may cause the anesthetic concentration rate to
be higher or lower than the handwheel setting.
8. Lift the bottle above the filler port level, avoiding kinks in the plastic
tube. The liquid should begin flowing within 10 seconds after raising
the bottle. If liquid does not begin to flow within 10 seconds, move
the bottle below filler port level and raise it above the filler port
again. (This allows any air trapped in the tubing to escape.) Repeat
as necessary to start the flow.
Section 5 - Operation
Vaporizer
5-2-7